From ᾰ̓λέκτωρ ‎(aléktōr, “cock, rooster”) +‎ -υών ‎(-uṓn, an obscure suffix also appearing in ἀλκυών ‎(alkuṓn, “kingfisher”)). The first element is the agentive noun of ᾰ̓λέξω ‎(aléxō, “ward off”), from Proto-Indo-European*h₂lek-s-, an *s-derivative of *h₂elk- ‎(“protect”).[1]